Means for making bowling-pins.



R. E. STANLEY.

NEANs ron NNNlNe BOWLING PINS.

Patented Jan. 11, 1916.

APPLICATION FILED AUG. I4 1915.

N. fg 4%3 RE, S TAN/LEY COLUMBIA PLANMRAPH co., WASHINGTON, D1 c.

iE STATES PATENT @FENCE RICHARD E. STANLEY, OF PITTSBURGH, PENNSYLVANIA,ASSIGNOR Oli ONE-HALF TO CHARLES LUTZ, F PITTSBURGH, PENNSYLVANIA.

MEANS FOR MAKING BOWLING-PINS.

Application led August 14, 1915.

To all ywhom t may concern.'

Be it known that l, RICHARD E. STANLEY, a citizen of the United States,residing at Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and use 't'ul improvements inMeans for Making BowlingePins, of which the following is aspecification, reference being had to the accompanying drawings.

'ibis invention relates to improved means 'for making bowling pins andmore particularly to means 'or manufacturing a hollow cast metal bowlingpin of the character dis closed in my prior Patent, No. 1,144,078,issued J une 22, 1915.

lt is the primary object of the present invention to devise certainimprovements for casting hollow metal bowling pins wherein means areemployed in the construction of the sand core to support the pinproperly in place within the mold so that a continuous wall of therequisite thickness will be formed when the metal is poured, thesustaining means :tor the core resulting in the provif sion of a singleopening in the base of the pin through which the sand may be removed.

lt is another object of the invention to provide in the practice of myinvention, an anchoring lug which is made up in the head of the sandcore and is provided with an extension serving to support the core inplace, said extension being cut oil' after the pin has been molded,whereby the anchoring lug is centrally fixed in the pin head andprojects interiorly thereof.

T he invention has for still another object to provide certainimprovements for the construction of hollow metal bowling pins, wherebythe same will have a continuous one-piece metal wall, said methodembodying the use of means which is simple and inexpensive and enablesthe sand core to be quickly and accurately set in place in the moldflask.

lWith the above and other objects in view, my invention consists in thenovel features ol construction, combination and arrangement of parts tobe hereinafter more fully described, claimed and illustrated in theaccompanying drawing, in which,

Figure l is a horizontal sectional view through the molded pin and thesand core, showing the mold flask open and the anlchoring pin in place;Fig. 2 is a vertical Specicaton of Letters Patent.

Patented Jan. lll, i915.

Serial No. 45,519.

section through the pin and sand Fig. 3 is a detail perspective viewChorin g lug or pin.

ln carrying out my present improvements for the manufacture of hollowcast metal bowlingl pins, the sand core indicated at 5 1s tiret termedin the usual manner, the sand being sustained in compact form andprevented from crumbling ai'ter it is baked, by means of alongitudinally disposed, metal rod 5 which projects beyond the base oi'the sand core. A cylindrical sand print 7 is formed around this rodextension and provides means for supporting the core at its core; and ofthe anbase in the mold. ln the other or head end of the sand core, theanchoring lug or pin, generally indicated at 8, is embodied when thecore is formed. rlhis pin has an enlarged flared portion 9, preferablyof rectangular cross-sectional form, and a reduced tapering extension l0projecting from the end Jface of said iared portion. The portions 9 and10 of the anchoring pin are wholly disposed within the head of the sandcore. The long, cylindrical portion ll of the pin projectslongitudinally :trom the end oli' the core head, and immediatelycontiguous to the flared end of the anchoring pin, the part ll is provided upon opposite sides with l'ieshaped grooves or channels 12, Thelength of these channels is preferably, (in the casting of duck pins)one-quarter of an inch.

ln setting up the baked sand core in the mold, the sand print extensionZ on the body of the core is seated in one end of the base section 13 ofthe mold. The extension 11 of the anchoring lug or pin in the head ofthe core is seated in the opposite end wall of the mold, it beingunderstood that the Outer ends ot' the divergent portions of the groovesl2 are in line with the inner face of the end wall of the mold so thatthe distance between the same and the head of the sand core will beone-quarter of an inch. The configuration of the inner faces of thesections of the mold is, ot' course, the same as that or" the outlineoi' the sand core. ln the ordinary bowling pin of this type, the sandcore, when mounted in the mold as above stated, will be sustained inproper spaced relation to the walls ot' the flask, the distance betweenwhich is of an inch, except at the head end ot the pin where thethickness oi the wall is to be one-quarter of an inch in order that thepin will be properly balanced. The tapering extension 10, projectinglongitudinally in the sand core, serves to further sustain the weight ofthe core body and prevent breaking up of the sand. The mold section 14is now closed upon the base section 13 and the molten metal is poured.The pins are formed of aluminum, and the cast metal flows between thesand core and the wall of the mold and entirely lills this space. Themolten metal flowing around the anchoring pin 8 enters the grooves l2 inthe opposite sides of said pin. Thus, when the metal sets and hardens,the anchoring lug is firmly secured in place within the head wall of thepin. The lug or pin 8 is also formed of aluminum.

It will be noted that, by the provision of the sand print extension 7 onthe base of the core, an opening, indicated at 15, will be formed in thebase of the hollow metal pin after it is cast. TWhen the molded pin isremoved from the flask, the sand will be removed from the interior ofthe hollow pin through this opening 15. The outwardly projecting portionll of the anchoring lug in the head of the cast pin is now cut oi alongthe line o-a in Fig. l. The iiared anchoring lug 9, which remains in thehead of the pin, may be of such size that the pin, after being molded,will be oil the requisite standard weight. If it is necessary, however,to increase the weight of the cast metal pin, molten lead may be pouredinto the head thereoiI through the opening 15 in the base of the pin.This lead solidifying around the pin or lug 9, will be immovably held inplace.

From the foregoing description, it will be understood that, by castingthe pins in accordance with my improvements and using the anchor in thehead of the pin for the purpose of supporting the head of the core inproper position in the mold, the necessity of employing spacing elementsbetween the sides of the core and the walls of the flask is obviated, sothat the pins may thus be cast with a continuous one-piece metal wall.

My invention may be carried out in practice at very small expense, andby eliminating the necessity of casting-the hollow pin in two or moresections to be welded or otherwise united, a commercially superiorarticle is produced, as the pin will obviously be of greater durabilityand will not decrease in weight after long, continued use.

In the accompanying drawing, l have shown a duck pin of that typewherein the belly of the pin is adapted to be provided with a.circumscribing rubber band. 1t is, however, understood that my inventionmay be utilized in the construction of hollow metal pins without thiscircumferential band receiving recess, and can also be advantageouslyemployed in the manufacture oi' the larger tenpins.

Having thus fully described my invention, what I desire to claim andsecure by Letters Patent is 1* s Means for making hollow cast metalbowling pins including a sand core provided with a print extension onits base, a longitudinal rod embodied in the core and extending Ythrough the extension and into the core body, and a lug extending intothe head of the core and terminating in longitudinal spaced relation'tothe core rod, said lug having an extension projecting beyond the head ofthe core and provided with a l!- shaped grcove to receive the pouredmetal, said extension of the lug and the print eX- walls thereof.

In testimony whereof l hereunto aiiix my Y lVitnesses:

1. W. ENG-LAND, VILLIAM Pow.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents Washington, D. C.

